Fidelity national bank and tbust com



Feb. 19, 1929.

P. ARBON DRILLING JAR Filed May 5, 1925 r/ZTZZZZ Z 74 7/4 Patented Feb.19, 1929.

UNITED STATES PATENT OFFICE.

PAUL AEBON', or TULSA, OKLAHOMA, FIDELITY NATIONAL BAIJK AND TRUST GOM-PANY, or Kansas czar, MISSOURI, AND Lon-NE M. MCLEOD, or TULSA,OKLAHOMA, EXECUTORS or SAID PAUL ARBON, DECEASED, ASSIGNORS TO PAULARBON & COM- IPANY, OF TULSA, OKLAHOMA, a CORPORATION OF OKLAHOMA.

DRILLING JAB.

Application filed May 5, 1925.

This invention relates to the construction of that type of drilling jarknown as the T- head weldless jar.

The object of the present invention is to provide certain details ofconstruction found essential to the successful operation of tars of thetype above mentioned, and resides principally in the provision for therapid drainage or elimination of the mud and water which normallydestroys the function of the apparatus.

in the actual use of drilling jars, it has been found that unless themud and water is provided with a means of quick then the necessaryimpulse which a ar is presumed to provide will not be present. This 1sparticularly true in the drilling jar of the present day, which is madeof special alloy steel and subsequently heat treated. l.hese jars areprovided with little lateral play and the joints are very exactlyaligned to cmumate wear and buckling of the parts under the tremendousweight under which they operate. The destruction of a drilling jar dueto faulty construction is a very expensive proposition inasmuch as theconventional well of today is on an average more than 2500 feet deep.Ohviously. thecollapse of a jar at such a depth "will result in a.lengthy tishin job or perhaps in the total deatrlu-lion ol the well.

The pre ent invention provides for the escape of the mud and water atall points and in prartirally e cry direction and resides generally inthe provision of clongalwl llulo: in the male member and correspoiuliugperforations in the female member.

in crease will be had to the armnupanying drawings forming a part ofthis specilication and wherein like numerals of reference designatecorresponding;- parts throughout the several views. in which.

1 and 2 are side elevations. parts being: broken away in section, and

F 3 is a transverse sectional view on line 33 of Fig. 1.

Fig. e a section showing a modified an ranc'ement of flutes.

The upper or female section of the present j-ar includes the taperedscrew threaded pin 1 at the upper extremity, the angular wrench engagingportion 2, spaced by the cylindrical collar 3 and the tubular lowerextremity Serial No. 28,123.

formed with elongated side openings at and 5 and lower opening (5through which the neck of the male member passes. The tubular portion ofthe female member is provided with spared rows of perforations at thoseportions of the wall between the side openings -l and 5 and taese rowsof perforations extend the full length of the cylinder wall.

The male member is formed at its lower extremity with the threaded boxor socket 7, adjacent wrench engaging angular portion 8 and annular stopcollar portion 9. The portion of the male member above the collar 9 isgradually reduced at 10 to a diameter equivalent to the diameter of theopening in the female member and then continues into an elongatedcylindrical shank portion 11. The upper extremity of the male member isformed with integral lateral wings l2 and ll which engage and travel inthe slots 4 and 5 of the female member.

Flutes 15 extend the full length of the male shank member to the pointof the greatest diameter in the collar 9 and are spaced and arranged toregister with the longitudinal rows of perforations in the femalemember. Additional 'l'lutcs 16 are also provided in the collar l) ofgreater depth than the shank flutes: and these flutes lo. it will benoted, are spaced inlermedial'o the flutes 15.

(Ebvioir-dy during' the operation of the present jar. the mud and wateris provided with means of escape at practically every point and any'l'rit which normally mightbe inclined to park betw en the walls willgradually be removed by the flow of water and mud through the bites andout of the perforations, such 'llow naturally tending to spread toadjacent surfaces and thus maintain same in a substantially cleancondition. More important perhaps is the ability by means of the abovementioned con;-;tructi m of securing the desired jarring, impact forwhich the imple" ment is designed.

Numerous changes in the arrangements of ports and flutes might becontemplated under the present invention, the present illustration beingde 'ned to illustrate the function and operation of the invention in ageneral way.

\Vhat I claim as new and useful and desire to secure by Letters Patentis 1. A drilling jar including a tubular female member formed With aplurality of spaced perforations in its side Walls, and a male mem berarranged to operate within said female member and formed with grooves wlch register with said perforations, said grooves and certain of saidperforations constantly communicatinp'.

2. In a drilling jar including a female merinber formed with a pluralityof rows of perforations in its side Walls, a male member arranged totravel in said female member formed with flutes which register at alltimes With certain of said perforations.

In a drilling jar, a female member iii-- cliiiding a cylindrical portionhaving oppositely arranged openings and bein 'r formed with rows ofspaced perforations extending long tudinally of said cylindrical portionat points intermediate said openings and a male member formed withlateral extensions a .apted to travel in the ope: gs in said femalemember and being provided with flutes spacedto register With theperforations in the female member.

a. In a drilling jar, a. female member including a cylindrical portionllflx ng elongated openings in its vali formed W of perforationsextending throughout its tire length spaced intermediate said openings amale member formed with a stop collar at an intermediate point andWing's at its upper end adapted for travel in the openings in saidfemale member, the shank of said male member being fluted from a pointat approximately the greatest diameter of said collar to its upperextremity and the flutes being adapted to register with the rows ofperform tion in said female member, and additional flutes spacedintermediate the lJQfOIQi'l-IBB t-ioned flutes and extending the lengthof said,

collar portion.

5. In a drilling 1211', a female member inincense eluding a tubularportion having one end opened and the other end. closed, the tubularportion adjacent the open end forming a tubu- 45 Ear bearing a malemember including shank arranged to reciprocate in the tubular portion ofthe female member, and am; for preventthe shank from turning in thetubular por tion, said tubular boa-ring having; perforations in its sideWalls, and said shank having longitudinal grooves communicating withsaid perforations at all times.

6. A drilling as claimed in claim 5 in which the grooves extend throng?7 substantiallv the entire length of the s walls of the tubular portionof member between the tubular be closeiil end being pQlfOl'HiGtl. and tirations rcg'iste'ng with s; d groo fies.

. a drilling jar, a female member in a tubular portion havin elon ed 11s in its Wall and fo i ah rows of tially its entire length and spacedintermediate said openings, a male member formed wih a stop collar andprovided With wings at 2 l for travel in the openin in said femalemember, the shank of said in l memher being grooved from the stop collarto its extremity and the registering with said rows of perforations.

Piillla Altllt) N.

